.clearfix::before,
.clearfix::after
{
    /* 清除元素的浮动 */
    content: "";
    display: table;
    clear: both;
}
body{
    font:14px/1.5 Helvetica Neue,Helvetica,Arial,Microsoft Yahei,
    Hiragino Sans GB,Heiti SC,WenQuanYi Micro Hei,sans-serif;
    color: #333;
    min-width: 1226px;

}
/* 表示中间容器的宽度 */
.w{
    width: 1226px;
    margin: 0 auto;
}
